Ashcroft AATB Conversion | Transforming a Defender 90’s Traction

In this video we repair a Land Rover Defender 90 axle and convert it to an Ashcroft AATB (Automatic Torque Biasing Differential). The Ashcroft AATB is a helical-gear, torque biasing differential designed to massively improve traction both on-road and off-road, without the downsides of lockers or harsh driving characteristics. We strip and repair the axle before we install the unit, it's a popular upgrade for Defenders, and you will see benefits in real-world use — from green lanes and off-road challenges to everyday road driving. If you’re considering drivetrain upgrades for your Defender 90, this is one of the best value modifications you can make. 🔧 Vehicle: Land Rover Defender 90 🔩 Upgrade: Ashcroft AATB Differential 🏁 Use: Off-road, Overland, Daily Driving Don’t forget to like, subscribe, and comment if you want to see more Defender builds, drivetrain upgrades, and workshop projects. 📺 More Defender & workshop builds coming soon.